VDSL technology is considered as the next generation product of the Asymmetrical Digital Subscriber Loop (ADSL), which is the conception expansion of ADSL, so it is in the research stage.
VDSL技术被视为不对称数字用户线(ADSL)的下一代产品——这是对ADSL概念的扩展，故其现在还处在研究阶段。
VDSL technology is considered as the next generation product of the Asymmetrical Digital Subscriber Loop (ADSL), which is the conception expansion of ADSL, so it is in the research stage.
VDSL技术被视为不对称数字用户线(ADSL)的下一代产品——这是对ADSL概念的扩展，故其现在还处在研究阶段。
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